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Including the ColPack Sparsity Calculations

Purpose
If you specify a colpack_prefix on the cmake command line, the CppAD sparse_jacobian calculations use the ColPack package.

colpack_prefix
If ColPack is installed on your system, you can specify a value for its install colpack_prefix on the cmake command line. The value of colpack_prefix must be such that, for one of the directories dir in cmake_install_includedirs ,
     
colpack_prefix/dir/ColPack/ColPackHeaders.h
is a valid way to reference to the include file ColPackHeaders.h.

cppad_lib
The ColPack header files has a
     using namespace std
at the global level. For this reason, CppAD does not include these files. It is therefore necessary to link the object library cppad_lib when using ColPack.

Example
The file colpack_jac.cpp (colpack_hes.cpp ) contains an example and test of using ColPack to compute the coloring for sparse Jacobians (Hessians). It returns true, if it succeeds and false otherwise.

get_colpack
If you are using Unix, you can download and install a copy of ColPack using get_colpack.sh . The corresponding colpack_prefix would be build/prefix.
Input File: omh/install/colpack_prefix.omh